16511231052 has 24 divisors (see below), whose sum is σ = 42806895600. Its totient is φ = 5503743648.

The previous prime is 16511231041. The next prime is 16511231101. The reversal of 16511231052 is 25013211561.

16511231052 is a `hidden beast` number, since 1 + 651 + 1 + 2 + 3 + 1 + 0 + 5 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76440777 + ... + 76440992.

It is an arithmetic number, because the mean of its divisors is an integer number (1783620650).

Almost surely, 2^16511231052 is an apocalyptic number.

16511231052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16511231052 is an abundant number, since it is smaller than the sum of its proper divisors (26295664548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16511231052 is a wasteful number, since it uses less digits than its factorization.

16511231052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152881782 (or 152881774 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The spelling of 16511231052 in words is "sixteen billion, five hundred eleven million, two hundred thirty-one thousand, fifty-two".